8499990 has 32 divisors (see below), whose sum is σ = 20478816. Its totient is φ = 2257920.

The previous prime is 8499979. The next prime is 8500007. The reversal of 8499990 is 999948.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12294 + ... + 12966.

It is an arithmetic number, because the mean of its divisors is an integer number (639963).

Almost surely, 2^8499990 is an apocalyptic number.

8499990 is an abundant number, since it is smaller than the sum of its proper divisors (11978826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8499990 is a wasteful number, since it uses less digits than its factorization.

8499990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 8499990 is about 2915.4742324363. The cubic root of 8499990 is about 204.0826750634.

The spelling of 8499990 in words is "eight million, four hundred ninety-nine thousand, nine hundred ninety".